Total No. of Questions—4] [Total No. of Printed Pages—2
Seat
No. [5361]-301
M.C.A. (Commerce) (Semester III) EXAMINATION, 2018
CORE JAVA
(2013 Pattern)
Time 3 Hours Maximum Marks 50
1. Attempt any seven
State the purpose of this keyword.
What is an applet
Give the use and syntax of getActionCommand( method.
List any two interfaces used in event handling.
try block must have a catch block''. State true or false.
Justify.
What is the purpose of javac
Define hashset.
What is garbage collection
2. Attempt any three
Write a note on package.
Difference between asbstract class and interface.
Write a program to read n string and insert into arraylist
collection. Display the elements of collection in reverse order.
Write a program using Java that accepts n integer as command
line argument and displays the count of even and odd numbers.
[5361]-301 2
3. Attempt any three
What is layout manager Explain any two in detail.
Write a java program which accepts a number from user. If
the number is not a prime number then raise an exception
''NoNotPrimeException''. Otherwise display result.
Write a class student. Store it in STUD package. Create another
class batch with information about subject, faculty and timing.
Store it in package BAT. Use class batch to set information
for student class.
Explain iterator and comparator with appropriate example.
4. Attempt any three
How can we create our own exception Explain with example.
Design a screen in java which contains two text box and one
button. The content entered in to first textbox will be displayed
in second text box in reverse case after button click.
Explain the following string class methods with syntax and
example
length(
(ii equals(
(iii charAt(
compareTo(
Write a java program to calculate sum of all integers greater
than 50 and less than 100 that are divisible by 5.